https://social.technet.microsoft.com/Forums/ie/en-US/67690865-2e96-45b2-a457-c65b6cdb332d/restrict-user-to-save-file-on-desktopdocumentsand-etc?forum=winserverGP


https://www.blackberry.com/us/en/products/blackberry-workspaces-efss#stories

https://developers.blackberry.com/us/en/resources/get-started/blackberry-workspaces-sdk-getting-started.html#step-2